HyperDic: rest_energy

English > 1 sense of the expression rest energy:
NOUNphenomenonrest energythe energy equivalent to the mass of a particle at rest in an inertial frame of reference
English > rest energy: 1 sense > noun 1, phenomenon
MeaningThe energy equivalent to the mass of a particle at rest in an inertial frame of reference; equal to the rest mass times the square of the speed of light.
Broaderenergy, free energy(physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work

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